New exercises

dominoes.md

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+Compute an way to order a given set of dominoes in such a way that they form a
+correct domino chain (the dots on one half of a stone match the dots on the
+neighbouring half of an adjacent stone) and that dots on the halfs of the stones
+which don't have a neighbour (the first and last stone) match eachother.
+
+For example given the stones `21`, `23` and `13` you should compute something
+like `12 23 31` or `32 21 13` or `13 32 21`, etc.

dominoes.yml

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+---
+blurb: "Make a chain of dominoes."

tournament.md

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+Tally the results of a small football competition. Based on an input file
+containing which team played against which and what the outcome was 
+create a file with a table like this:
+
+```
+Team                           | MP |  W |  D |  L |  P
+Devastating Donkeys            |  3 |  2 |  1 |  0 |  7
+Allegoric Alaskians            |  3 |  2 |  0 |  1 |  6
+Blithering Badgers             |  3 |  1 |  0 |  2 |  3
+Courageous Californians        |  3 |  0 |  1 |  2 |  1
+```

tournament.yml

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+---
+blurb: "Tally the results of a small football competition."